| While helmet safety is regulated (DOT or SNELL), helmet size is far from standard and varies from brand to brand. The charts below are provided from each manufacturer as a reference when purchasing a helmet. Use the provided measuring tape or use a string to obtain an accurate measurement of your head before selecting a helmet size. |
|
Shoei | HJC | Vega | Bikers Choice | KBC | Nolan | Novelties
|
| Shoei |
| Head Circumference |
Helmet Size |
| Hat Size |
Inches |
Centimeters |
| 6 1/4 – 6 1/2 |
19 3/4 – 20 1/8 |
50-52 |
CHILDS S/M |
| 6 5/8 – 6 3/4 |
21 1/4 |
53-54 |
CHILDS L/XL |
| 6 3/8 – 6 1/2 |
21 1/8 |
51-52 |
XXSmall |
| 6 5/8 – 6 3/4 |
21 1/4 |
53-54 |
XSmall |
| 6 7/8 – 7 |
21 5/8 |
55-56 |
Small |
| 7 1/8 – 7 1/4 |
22 3/8 |
57-58 |
Medium |
| 7 3/8 – 7 1/2 |
23 1/8 |
59-60 |
Large |
| 7 5/8 – 7 3/4 |
23 1/2 |
61-62 |
XLarge |
| 7 7/8 – 8 |
24 1/4 |
63-64 |
XXLarge |
| 8 3/8 – 8 1/2 |
24 5/8 |
65-66 |
XXXLarge |
|
| HJC Adult |
| Head Circumference |
Helmet Size |
| Hat Size |
Inches |
Centimeters |
| 6 3/8-6 1/2 |
20 1/4-20 1/2 |
51-52 |
XXSmall |
| 6 5/8-6 3/4 |
20 7/8-21 1/4 |
53-54 |
XSmall |
| 6 7/8-7 |
21 5/8-22 |
55-56 |
Small |
| 7 1/8-7 1/4 |
22 3/8-22 3/4 |
57-58 |
Medium |
| 7 3/8-7 1/2 |
23 1/8-23 1/2 |
59-60 |
Large |
| 7 5/8-7 3/4 |
24-24 3/8 |
61-62 |
XLarge |
| 7 7/8-8 |
24 3/4-25 1/8 |
63-64 |
XXLarge |
| 8 1/8-8 1/4 |
25 1/2-26 |
65-66 |
XXXLarge |
|
| Vega |
|
Head Circumference
|
Helmet Size |
|
Hat Size
|
Inches
|
Centimeters
|
| 6 5/8 – 6 3/4 |
20.87 – 21.26 |
53 – 54 |
X Small |
| 6 7/8 – 7 |
21.65 – 22.05 |
55 – 56 |
Small |
| 7 1/8 – 7 1/4 |
22.44 – 22.83 |
57 – 58 |
Medium |
| 7 3/8 – 7 1/2 |
23.23 – 23.62 |
59 – 60 |
Large |
| 7 5/8 – 7 3/4 |
24.02 – 24.41 |
61 – 62 |
X Large |
| 7 7/8 – 8 |
24.80 – 25.20 |
63 – 64 |
XX Large |
| 8 1/8 – 8 1/4 |
25.60 – 26.00 |
65 – 66 |
XXXLarge |
|
| Bikers Choice |
| Head Circumference |
Helmet Size |
| Hat Size |
Inches |
Centimeters |
| 6 5/8-6 3/4 |
20 7/8-21 1/4 |
53-54 |
XSmall |
| 6 7/8-7 |
21 5/8-22 |
55-56 |
Small |
| 7 1/8-7 1/4 |
22 3/8-22 3/4 |
57-58 |
Medium |
| 7 3/8-7 1/2 |
23 1/8-23 1/2 |
59-60 |
Large |
| 7 5/8-7 3/4 |
24-24 3/8 |
61-62 |
XLarge |
| 7 7/8-8 |
24 3/4-25 1/8 |
63-64 |
XXLarge |
|
| KBC |
| Head Circumference |
Helmet Size |
| Hat Size |
Inches |
Centimeters |
| 6 3/8-6 1/2 |
20 1/4-20 1/2 |
51-52 |
XXSmall |
| 6 5/8-6 3/4 |
20 7/8-21 1/4 |
53-54 |
XSmall |
| 6 7/8-7 |
21 5/8-22 |
55-56 |
Small |
| 7 1/8-7 1/4 |
22 3/8-22 3/4 |
57-58 |
Medium |
| 7 3/8-7 1/2 |
23 1/8-23 1/2 |
59-60 |
Large |
| 7 5/8-7 3/4 |
24-24 3/8 |
61-62 |
XLarge |
| 7 7/8-8 |
24 3/4-25 1/8 |
63-64 |
XXLarge |
|
| Nolan |
| Head Circumference |
Helmet Size |
| Hat Size |
Inches |
Centimeters |
| 6 5/8-6 3/4 |
20 7/8-21 1/4 |
53-54 |
XSmall |
| 6 7/8-7 |
21 5/8-22 |
55-56 |
Small |
| 7 1/8-7 1/4 |
22 3/8-22 3/4 |
57-58 |
Medium |
| 7 3/8-7 1/2 |
23 1/8-23 1/2 |
59-60 |
Large |
| 7 5/8-7 3/4 |
24-24 3/8 |
61-62 |
XLarge |
| 7 7/8-8 |
24 3/4 |
63 |
XXLarge |
|
| Novelties – Big German, Jockey and Kaiser |
|
Head Circumference
|
Helmet Size |
|
Hat Size
|
Inches
|
Centimeters
|
| 7 – 7 1/8 |
21 3/4 – 22 3/8 |
55 – 57 |
Small |
| 7 1/4 – 7 1/2 |
22 1/2 – 23 1/8 |
57 – 59 |
Medium |
| 7 5/8 – 7 3/4 |
23 1/4 – 24 |
60 – 60 |
Large |
| 7 7/8 – 8 |
24 1/8 – 24 7/8 |
61 – 63 |
X Large |
|
| Novelties – Eagle, Smokey and Turtle. |
|
Head Circumference
|
Helmet Size |
|
Hat Size
|
Inches
|
Centimeters
|
| 6 1/2 – 6 5/8 |
20 1/4 – 20 7/8 |
51 – 53 |
X Small |
| 6 3/4 – 6 7/8 |
21 – 21 5/8 |
53 – 55 |
Small |
| 7 – 7 1/8 |
21 3/4 – 22 3/8 |
55 – 57 |
Medium |
| 7 1/4 – 7 1/2 |
22 1/2 – 23 1/8 |
57 – 59 |
Large |
| 7 5/8 – 7 3/4 |
23 1/4 – 24 |
60 – 60 |
X Large |
| 7 7/8 – 8 |
24 1/8 – 24 7/8 |
61 – 63 |
XX Large |
|
| Novelties – Duck Tail, EZ Rider, Little German and Gladiator. |
|
Head Circumference
|
Helmet Size |
|
Hat Size
|
Inches
|
Centimeters
|
| 6 1/4 – 6 1/2 |
19 1/2 – 20 1/8 |
48 – 51 |
X Small |
| 6 1/2 – 6 5/8 |
20 1/4 – 20 7/8 |
51 – 52 |
Small |
| 6 3/4 – 6 7/8 |
21 – 21 5/8 |
52 – 55 |
Medium |
| 6 7/8 – 7 1/8 |
21 3/4 – 22 3/8 |
55 – 56 |
Large |
| 7 1/8 – 7 3/8 |
22 1/2 – 23 1/8 |
57 – 58 |
X Large |
| 7 3/8 – 7 5/8 |
23 1/4 – 24 |
59 – 60 |
XX Large |
|
